From: Michael Witrant <mike@...>
Date: 2001-08-20T22:22:31+09:00
Subject: [ruby-talk:20021] Module#include and module/class methods


Why aren't module methods availiable as class methods when a module is
included?

For example:
  module Foo
    def Foo.bar; end
  end
  class A
    include Foo
  end
  A.bar #=> NameError: undefined method `bar' for A:Class

I'd like my module to add instance methods as well as class methods,
with a single include statement.
To do that I splitted the module: one with instance methods and the
other one with module/class methods:

  module Foo_class_methods
    def bar; puts "Foo.bar"; end
  end
  module Foo
    def bar; puts "Foo#bar"; end
    def Foo.append_features(mod)
      super
      mod.extend Foo_class_methods
    end
  end

  class A
    include Foo
  end

  A.bar     #=> Foo.bar
  A.new.bar #=> Foo#bar
  

Is there a better way to acheive that? It looks better if there is only
one module.


Mike.
midulo.